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When 1.0 g of a non-volatie solute was dissolved in 10 g benzene, elevation in boiling point temperature was found to be 1^(@)C. Calculate the molar mass of the dissoved substance. (K_(b) "for benzene = 2.53 K kg" mol^(-1)). |
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Answer» `DeltaT_(b)=1^(@)C or 1 K, K_(b)=2.53" K kg MOL"^(-1)` `M_(B)=(K_(b)xxW_(B))/(DeltaT_(b)xxW_(A))=((2.53" K kg mol"^(-1))xx(1.0 G))/((1 K)xx(0.01" kg"))=253" g mol"^(-1)` |
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